body,
html {
  box-sizing: border-box;
  background-color: #8ec5fc;
  position: relative;
  background-image: linear-gradient(62deg, #8ec5fc 0%, #e0c3fc 100%);
}
.main {
  width: 900px;
  height: 600px;
  background-color: red;
  margin: 0 auto;
  display: flex;
}
